Ready for more "Groupon is worth what?!" kind of reactions? The New York Times is reporting that the daily deals site has been seriously discussing going public with Wall Streeters this week, with a rumored IPO sometime in Spring. The report also amps up Groupon's valuation to more than double the $6 billion Google had reportedly offered for the company just months ago, at about $15 billion "or more." From The New York Times: "An I.P.O, if it hap … Read More